Alert archive / Georgia / Special Weather Statements in 2020

Special Weather Statement, NWS Atlanta, GA

July 20, 2020Fannin County, Georgia

NWS Atlanta, GA issued this special weather statement at Jul 20, 2020, 2:18 PM EDT for Fannin County, Georgia. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 20, 2020, 2:18 PM EDT (18:18 UTC)
Expired: Jul 20, 2020, 2:45 PM EDT
In force: 27 min
Issued by: NWS Atlanta, GA
Hail: 0.25 in
Wind: 40

County Fannin County, GA

The radar

The Northeast Alabama radar (KHTX), 151 km from the middle of the area, began a volume at 18:19 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 6.3 hours before the alert went out and 237 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1474 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 1142 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 49 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Atlanta, GA wrote its last area forecast discussion before this special weather statement went out at Jul 20, 2:07 PM EDT, 11 minutes earlier.

Area forecast discussion, Jul 20, 2:07 PM EDT, 11 minutes before

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Hazardous weather outlook, Jul 20, 11:56 AM EDT, 2 hours 22 minutes before

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In the hours before

Local storm report, Jul 20, 9:51 AM EDT, 4 hours 27 minutes before

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Local storm report, Jul 20, 12:55 PM EDT, 1 hour 23 minutes before

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Special weather statement, Jul 20, 2:18 PM EDT, 0 minutes before

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The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 19, 8:36 PM EDT	Special Weather Statement	FFC	Marion	24 min
Jul 19, 8:44 PM EDT	Special Weather Statement	FFC	Lumpkin	31 min
Jul 20, 5:55 PM EDT	Special Weather Statement	FFC	Johnson	35 min
Jul 20, 6:06 PM EDT	Special Weather Statement	FFC	Washington	24 min
Jul 20, 6:49 PM EDT	Special Weather Statement	FFC	Jefferson	26 min

Nearby

Special Weather Statements in Georgia, 2020 Every special weather statement in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.